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| author |   Rob Herring <robh@kernel.org> | 2019-02-02 09:41:54 -0600 |
|---|---|---|
| committer |   Maxime Ripard <maxime.ripard@bootlin.com> | 2019-02-19 11:08:40 +0100 |
| commit | 1ba627148ef5d9dee879585687c4b0ee644f7ab5 (patch) | |
| tree | 013127773bba3148f5a035be21b7d838c09cd5d8 /drivers | |
| parent | drm/sun4i: dsi: Add burst support (diff) | |
| download | linux-dev-1ba627148ef5d9dee879585687c4b0ee644f7ab5.tar.xz linux-dev-1ba627148ef5d9dee879585687c4b0ee644f7ab5.zip | |
drm: Add reservation_object to drm_gem_object
Many users of drm_gem_object embed a struct reservation_object into
their subclassed struct, so let's add one to struct drm_gem_object.
This will allow removing the reservation object from the subclasses
and removing the ->gem_prime_res_obj callback.
With the addition, add a drm_gem_reservation_object_wait() helper
function for drivers to use in wait ioctls.
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202154158.10443-2-robh@kernel.org
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_gem.c | 43 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_prime.c | 1 |
2 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index d0b9f6a9953f..ad124f5a6f4d 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -171,6 +171,10 @@ void drm_gem_private_object_init(struct drm_device *dev, kref_init(&obj->refcount); obj->handle_count = 0; obj->size = size; + reservation_object_init(&obj->_resv); + if (!obj->resv) + obj->resv = &obj->_resv; + drm_vma_node_reset(&obj->vma_node); } EXPORT_SYMBOL(drm_gem_private_object_init); @@ -688,6 +692,44 @@ drm_gem_object_lookup(struct drm_file *filp, u32 handle) EXPORT_SYMBOL(drm_gem_object_lookup); /** + * drm_gem_reservation_object_wait - Wait on GEM object's reservation's objects + * shared and/or exclusive fences. + * @filep: DRM file private date + * @handle: userspace handle + * @wait_all: if true, wait on all fences, else wait on just exclusive fence + * @timeout: timeout value in jiffies or zero to return immediately + * + * Returns: + * + * Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or + * greater than 0 on success. + */ +long drm_gem_reservation_object_wait(struct drm_file *filep, u32 handle, + bool wait_all, unsigned long timeout) +{ + long ret; + struct drm_gem_object *obj; + + obj = drm_gem_object_lookup(filep, handle); + if (!obj) { + DRM_DEBUG("Failed to look up GEM BO %d\n", handle); + return -EINVAL; + } + + ret = reservation_object_wait_timeout_rcu(obj->resv, wait_all, + true, timeout); + if (ret == 0) + ret = -ETIME; + else if (ret > 0) + ret = 0; + + drm_gem_object_put_unlocked(obj); + + return ret; +} +EXPORT_SYMBOL(drm_gem_reservation_object_wait); + +/** * drm_gem_close_ioctl - implementation of the GEM_CLOSE ioctl * @dev: drm_device * @data: ioctl data @@ -851,6 +893,7 @@ drm_gem_object_release(struct drm_gem_object *obj) if (obj->filp) fput(obj->filp); + reservation_object_fini(&obj->_resv); drm_gem_free_mmap_offset(obj); } EXPORT_SYMBOL(drm_gem_object_release); diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 231e3f6d5f41..dc079efb3b0f 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -504,6 +504,7 @@ struct dma_buf *drm_gem_prime_export(struct drm_device *dev, .size = obj->size, .flags = flags, .priv = obj, + .resv = obj->resv, }; if (dev->driver->gem_prime_res_obj) |